Improvement in wagon-brakes



Patented Jan. 3, 1871. n

A. V. H. OLIVER.

Wagon Brake.

Illlllllllll IIIIIIIIIIIII I NJPETERS. PHOTO-UTNOGRAPMER, WASHINGTON. n c.

than sale and cam.

ANDREW VAN DER HYDEN OLIVER, OE BETHLEHEM, NEW YORK.

Letters Patent No. 110,673, dated January 3, 1871.

IMPROVEMENT IN WAGON-BRAKES.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern:

Be it known that I, ANDREW VAN DER. HYDE); OLIVER, of the town of Bethlehem, county ofAlbany,

State of New York, have invented certain. new and useful Improvements in \Vagon-Brakes; and I do hereby declare that the following is a description thereof, reference being had to the accompanying drawing forming a part of this specification, in which Figure l is a side elevation of the front part of a wagon with the improvements in this invention applied.

Figure 2 is a vertical view from above of the same,

Figure 3 is a view from the rear of the fore part of a wagon with this invention applied.

Figure 4 is a cross-section, on an enlarged scale, of the brake-bar guard used with this invention.

The same letters indicate like or similar parts.

In the drawing-- v A represents the axle.

B B are the wheels.

G O are the hounds. v

D is the sway-bar.

E, the pole.

F F are the brake-levers. r

I place beneath the pole E a backingrod, G, fig.- 1, which rod-is furnished with the usual holdback g, by which the said rod is pushed back.

The rear end of the backing-rod is furnished with a loop, a, which is formed by continuing the backingrod G up past the rear end of the pole E, as shown in fi 1.

Thc said rod is continued past the loop a, and is extended over the top of the rear end of the pole, and in such a manner that the said extended part will form the hammer-strap l), figs. 1 and 2.

The said hammer-strap b is furnished with the usual hole to receive the bolt of the double-tree .J, which bolt passes down into and works in the oblong hole 0, made in the pole at that point, as shown in figs. 1 and 2. v 7

By this combination of the several parts described above, the horses, by their backing, will cifect the several other parts of the brake to cause the brake-blocks to operate on the wheels, and by their draft will also effect the reverse, and release the said brake-shoes from contact with the wheels.

11 is a forked rod having two legs, 0 and 0', connecting with a common head, f, in front of the axle A, which head is provided with an eye, X, through which the loop a of the backing-rod G is passed, as shown in figs. 1 and 2.

The legs 0 and e are, passed through the space between the axle A and the sand-bar A, and connect with thedevers F F at near their contacting ends.

Being thus constructed and arranged, this forked rod H, connecting with the backingrrod G and the levers F F, will operate the said levers F F to throw the brake-shoes in action when the said backing-rod G is crowded back; but when the said forked rod H is drawn forward by the action of the draft ofthe horses on the double-tree through the backing-mod G, the said levers F F willbe thrown the reverse, so as to throw the brake-shoes out of action with the wheels. v

The brake-levers'F F are pivoted below the swaybar 1') and the hounds O, as shown in the several figarcs, and in such a manner that a permission will be given forvertical movement of their ends at and n on each side of the pivots 1), fig. 3.

At the center of the sway-bar D, where the reachhead K connects with the same, I place, apiece, L, which I denominate the lever-guard, which guard consists of a wide piece of metal, which I form, as shown in figs. 1, 2, and 4, in such'a manner as will leave a space between the sway-bar D and the bottom of the guard L snfiiicient to admit the thickness of the levers F F, and at the same time retain a vacant space in which the ends of the said levers F can work vertically. The said guard has in it also a recess, S, at its rear, in which the ends of the levers can play.

\Vhen descendinga hill, the horses will hold back by neck-yoke pressing against the holdbaok g of the backing-rod G, which rod will throw the forkedrod H back and cause the ends m of the levers F F to throw back, as shown in'fig.2 by dotted lines. When the said ends m'arc thrown back, the levers F will swing on their pivots p, and will throw the ends a forward so as carry the brake-shoes N in contact with the wheels A. The wheels A,revolvingforward in the direction indicated by full-line arrows, will, by the friction co nsequent by the contact of shoes N with the said wheels, tend to carry the end a up to dotted line it, fig. 3,

' when the ends mwill be thrown down, and the horses holding back will tend to crowd the said ends in back into the recess S, fig. 4, so that the said lever-ends anwill occupy the space between Z V instead of between no. The bottom of the guard L will in the meantime hold up the ends on, and prevent their being thrown unduly down.

But when the wheels are revolved back in a direction indicated by dot-ted arrows in fig. 1, as in the case with backing frdm under a shcd, the contact of the wheels A with the shoesN will tend to carry thc ends a down and throw up the ends on to the lowerJsideof the sway-bar, as shown by dot-ted lines- 1*" in fig. 4, when the endsm will catch at the point just above the recess S, prevent the said ends to throw back, and 2. The forked lever-rod H with its eye 2:, combined will thus prevent the ends nbeing excessively pressed with the brake-lever D and backing-rod G, when all toward the wheels A, and prevent the shoes N from are constructed and operatedzts described.

acting efi'eetively on the said wheels. 3. The guard L, constructed substantially as an Having described my invention, for the purpose set forth. What I claim, and desire to secure-by Letters Pat- ANDREW V. D. H. OLIVER. eat is r v 1 In a wagon-brake, the loop a and hammer-strap Witnesses: b, combined with the hacking-rod G, substantially as ALEX. SELKIRK,

and for thepurpose set forth. M. F. HYDE. 

